Loose-leaf book.



J. GRIESINGER.

LOOSE LEAF BOOK. ATPLIOATIOH FILED APR. 25, 1908.

91 1, 125. Patented Feb. 2, 1909.

* UNITED STATES IATENT ornrc.

JOHN GRIES-INGER, OF LOS ANGELES,.CALIFORNIA';

LOOSE-LEAF BooK.

' Specification of Letters Patent. Application filed April 25,

Patented Feb. 2, 1909.

1908. Serial No. 429,292.

and has for one object to provide a simple and secure binding device in the form of flexible straps, each comprising two separable parts, by means of which the cover is removably attached to the leaves of the book, and by disjoining the separable straps, one or more leaves may be removed from, or inserted into any part of the book in a mos expeditious and safe manner. 1

Another object of the inveiition p'ertains to the two part binding straps andv their fastening to the sides of the cover by means of which the book is held firm, strain on the leaves when opening it prevented and permitting the book to lie fiat when opened.

With these and other objects in view the invention consists of the combination, construction and arrangement of parts hereinafter described and claimed and illustrated in the accompanying drawing in which:

Figure 1 is a perspective view of the looseleaf book with one side turned back to expose the fastening ends of two binding straps: Fig. 2 a cross sectional View through the book with one side slightly raised showing one of the binding straps complete and in position: Fig. 3 a perspective view of a two part binding strap: Fig. 4 asimilar view of the separable ends of the strap disconnected, and Fig. 5 an enlarged; sectional view of the means for connecting the ends of the straps to the sides.

Similar reference numerals are used for v the same parts in all the figures. 1

The sides 1 of the bookcover are preferably stiff and are flexibly joined 'to the back 2 in any one of the usual ways known to the book binders. In each side 1 are formed two or more shallow depressions 3, the number depending on the size of the book and the number of binding straps 4 employed to fasten the leaves 5 in place. The depressions 3 are transversely disposed, those on one side being in line with like de pressions on the other side and their lengths less than the width of said sides. The outer ends of the depressions are preferably semicircular, their inner ends are straight and from each extends a slot or opening 6 made in the body of the side 1 to the inner edge of said side where it is joined to the back 2 as clearly shown in Figs. 1 and 2. A stud 7 projects into each depression near its outer curved end, said stud movably seated in a hole larger than itself'and retained therein by. inner and outer collars 8 and 9 respectively. The outer collars 9 are hidden by the material in which the cover is bound while the inner collars 8 lie below the lining of. the depressions, perforations 10, being made in said lining large enough to allow the studs to move but not as large as the collars 8.

resilient metal strips 11 and 12 made preferably of steel, separably connected together at endwise and having secured to the outer end of each flexible finger piece 13 of leather or other suitable material. A spring socket 14 is fastened on each finger piece to connect the straps to the studs 7 when the book is assembled. The separable connection 15 between the strips 11 and 12 consist in this instance of two spaced pins 16 and 17 projecting slightly above the side of one of the strips, as 11, and having fiat heads as shown. 'The end of the other strip 12 is provided with two perforations 18 and 19 closer togetherthan the pins but large enough for the heads thereof, to pass through. A short slot 20 as wide as the pin 16, extends from said perforation 18 longitudinally towards the end of the strip, while a similar slot 21 extends from the perforation 19 transversely of the strip and at a right angle to the slot 20. To connect the strips 11 and 12, they are held flatwise with their edges at an angle one to the other. The pin 16 is then inserted in the opening 18 and the strips drawn apart to cause the pin to enter the slot 20 which being accomplished, the two strips are nearly alined thereby bringing the pin 17 and the perforation 19 in register. the pin 17 be now placed in the perforation 19 and the strips 11 and 12 straightened, the pin 17' will enter the slot 21 and "the two parts of the strap 4 be attached together. A reverse movement of the parts will separate them as is evident.

The leaves 5 have narrow elongated perforations 22, near their back edges through which the straps 4 pass, the perforations being widened at their centers to permit relative movement of the straps and eaves wlth- The binding strap 4 comprises two thin out the latter catching on the studs 16 and 17.

One way of making up a book with this device, is to separate the straps at the joint 15 and pass each part through a slot 6 in the sides from the end adjacent the depression towards the back of the cover. Then thread a section of each strap through the perforations 22 in all the leaves 5 and join these sections with their companion sections. The straps should then be drawn through the perforations until they project equally on each side of the leaves, this will bring the joints 15 about the middle of the book, as represented in Fig. 2. 'lhe spring sockets 14 are now to be connected to the studs 7 and the operation is complete.

Leaves may be removed or inserted with great ease by disengaging the ends of the straps from the studs and drawing the straps endwise until the joints 15 therein are brought to that part of the book where the leaves are to be removed or inserted. 'lhen pull the joints above the leaves until a suflicient length of each strap has been drawn up to permit the disconnection of the joints, which being done the changes in leaves may be made, the strap sections again joined and the straps once more pulled taut and their ends connected to the stud 7.

When the sides 1 of the cover are thick enough the slots 6 may be made directly therein, but when the sides are thin, strips 23 may be secured to the sides at the back edge beneath which the slots are made.

What is claimed is 1. A loose-leaf book comprising a cover formed with a back and sides, independent leaves within said cover, each leaf having a plurality of perforations near its back edge, and a plurality of two part resilient straps adapted to pass through the perforations in sai leaves and be separably connected at their ends to the sides of the cover.

sna s 2. A loose-leaf book comprising a cover formed with a back and sides, independent leaves within said cover, and a plurality of two part resilient straps sepz'rrably joined between their ends threaded through perforations in each leaf and separably connected at their ends to the sides of the cover.

3. A loose-leaf book comprising a cover, independent leaves within said cover, and two part separably connected straps e;\'- tending through perforations in said leaves and separably attached to the sides of the cover to hold the leaves in place, said straps being longitudinally movable in the porforations in the leaves to bring said separable connections to any part of the book betn'emi the beginning and the end.

4. A loose-leaf book comprising a cover formed with a back and sides, independent leaves within said cover, and a plurality of two part resilient straps separably joined between their ends threaded through perforations in said leaves and through slots in each cover side and separably atmuhed at their ends to said cover sides.

5. A loose-leaf book comprising a cover formed with a back and sides, independent leaves within said cover, a plurality of resilient metal straps separably joined between their ends threaded through perforations in said leaves and through slots in each cover, a flexible linger pie e attached to each end of said metal. strap, and a separable connection on each linger piece adapted to engage a co-acting member on the cover sides.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JOHN GRIESIN GER Witnesses ALBERT M. Non'rox, JULIA R. Srniee. 

